Combustible



Patented A r. 29,. 1930 UNITED s'r-Aras PATENT OFFICE PENNSYLVANIA.

COMBUSTIBLE No Drawing.

Application filed September 8, 1925. Serial No. 55,120.

(GRANTED man THE ACT or mncn a, 1883, as mnnrn man. so, was; m 0. e. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon. 5 The subject of this invention is a combustible intended, primarily, for use in tracer projectiles for signalling, illuminating or like purposes.

The mainobject of my invention is the imparting of greater visibility, brilliance and luminosity to the combustible.

To this enclmy invention consists in the use of salts of mercury,- either alone, or in combination with other substances. The mer- ,15 cury salts may be used in the form of oxygen carriers, as mercurous-oxide, mercuric oxide, mercurous mtrate, etc.; or in the form of a fuel for decreasing the rate of burning of the mixture while at the same time increasing the brilliance by using it in the form of mercuric thiocyanate, mercuric acetate, or mercuric oxalate; or the mercury may be stance to increase the-brilliance, as for example, mercurous chloride, mercuric chloride, mercuric sulphide, etc.

As an example of theuse of salts of mercury in the form of oxygen carriers the following formulae are given:

Parts added merely in the form of an inert sub-.

The following formula is a typical example of the use of a mercuric salt as a fuel.

Of the use of a mercury salt as an inert substance for increasing the brilliance of the combustible the following are examples.

Parts Barium peroxide 20 Barium nitrate 2 Magnesium 7 Calcium resinate or a resinous ester 3 Mercurous chloride 2 i and: i v

Parts Strontium mtrate 100 Strontium oxalate 10 Sodium nitrate 8 Magnesium A 34 Aluminum 127D Calcium resinate or a resinous ester 28 Mercurous chloride 10 I claim:

1. combustible composition including an oxygen carrier, a reducing agent, a binder and a non-fulminating salt of mercury.

2. A combustible including a salt of mercury as an inert substance.

3. A combustible composition "including a. non-fulminating salt of mercury. 1

.4. A tracer composition comprising salts of mercury. p 5. A combustible composition including an inorganic oxidizing ingredient adapted tog burn with a characteristic color, a non-fulminating salt of mercury and a reducing agent.

6. A combustible composition including an inorganic oxidizing ingredient adapted to Emmi with :1 agent and an mercury. 7. A ccmb characteristic color, a reducing mert substance wcompnslng a salt ustible ccmposition including Qmoxygen ciirrier, a. reducing agent, and from 4.95 to 24.5 per cent of ancnfulminating salt of mercury.

STERNER ST. P. MEEK. 

